Burn!

A Caribbean island in the mid-1800's. Nature has made it a paradise; man has made it a hell. Slaves on vast Portuguese sugar plantations are ready to turn their misery into rebellion - and the British are ready to provide the spark. They send agent William Walker (Marlon Brando) on a devious three-part mission: trick the slaves into revolt, grab the sugar trade for England... then return the slaves to servitude. (official distributor synopsis)